/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package dvd.servlets;

import dvd.gestionnaires.gestionnaireDvd;
import dvd.modeles.Film;
import dvd.modeles.Genre;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Collection;
import javax.ejb.EJB;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet(name = "ServletDVD", urlPatterns = {"/ServletDVD"})
public class ServletDVD extends HttpServlet {

    @EJB
    private gestionnaireDvd gestionnaireDvd;

    /**
     * Processes requests for both HTTP
     * <code>GET</code> and
     * <code>POST</code> methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        String action = request.getParameter("action");
        String forwardTo = "";
        String message = "";
        String titre = request.getParameter("titre");
        Collection<Film> listeDesFilms = new ArrayList<Film>();

        int max = Integer.valueOf(request.getSession().getAttribute("max").toString());
        int start = Integer.valueOf(request.getSession().getAttribute("start").toString());

        if (action != null) {
            if (action.equals("affichertout")) {
                int total = gestionnaireDvd.getNbrFilms();
                request.getSession().setAttribute("total", total);
                request.getSession().setAttribute("start", 0);
                listeDesFilms = gestionnaireDvd.getAllFilms(0, max);
                request.getSession().setAttribute("listeDesFilms", listeDesFilms);
                forwardTo = "index.jsp";

            }
            if (action.equals("rechercher")) {
                try {
                    listeDesFilms = gestionnaireDvd.getFilmsFromTitre(titre);
                    request.getSession().setAttribute("listeDesFilms", listeDesFilms);
                    request.getSession().setAttribute("total", listeDesFilms.size());
                    request.getSession().setAttribute("start", 0);

                } catch (Exception e) {
                }
                forwardTo = "index.jsp";

            }
            if (action.equals("film")) {
                int id = Integer.parseInt(request.getParameter("id"));
                Film f = gestionnaireDvd.getFilmFromId(id);
                request.setAttribute("film", f);
                forwardTo = "detailfilm.jsp";
            }
            if (action.equals("suivant")) {
                Collection<Film> liste = gestionnaireDvd.getAllFilms(start + max, max);
                request.getSession().setAttribute("listeDesFilms", liste);
                request.getSession().setAttribute("start", start + max);
                forwardTo = "index.jsp";
                message = "";

            } else if (action.equals("precedent")) {
                Collection<Film> liste = gestionnaireDvd.getAllFilms(start - max, max);
                request.getSession().setAttribute("listeDesFilms", liste);
                request.getSession().setAttribute("start", start - max);
                forwardTo = "index.jsp";
                message = "";

            }
            if (action.equals("categorie")) {
                String genre = request.getParameter("genre");
                listeDesFilms = gestionnaireDvd.getFilmsFromGenre(genre);
                request.getSession().setAttribute("listeDesFilms", listeDesFilms);
                request.getSession().setAttribute("total", listeDesFilms.size());
                request.getSession().setAttribute("start", 0);

                forwardTo = "index.jsp";

            }
        } else {
            forwardTo = "index.jsp?action=todo";
            message = "La fonctionnalité pour le paramètre " + action + " est à implémenter !";
        }
        RequestDispatcher dp = request.getRequestDispatcher(forwardTo);
        request.setAttribute("message", message);
        dp.forward(request, response);
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP
     * <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP
     * <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
